This image of Mars was constructed from three different black-and-white
images recording red light, green light, and blue light reflected
from the planet.

The colors assigned to each of these images were chosen to simulate
Marsí actual colors.

Not surprisingly, the brightest black-and-white image of the
red planet is the one taken through a red filter. However, note
that the northern ice cap in these black-and-white images is equally
bright in red, green, and blue light because its actual color
is white.